Tsev »Khoom»Reagent fwj»500ml reagent fwj»500ml xov xwm lub raj mis muaj gl45 xiav cap khoom siv

500ml xov xwm lub raj mis muaj gl45 xiav cap khoom siv

Lub B2O3 cov ntsiab lus rau borosilicate iav yog feem ntau 12-13% thiab SOOO2 cov ntsiab lus yog tshaj 80%. Cov tshuaj tsis txaus ntseeg thiab qis kawg ntawm kev nthuav dav (3.3 × 10-7

Nyob4.7\ / 5 / raws li375Cov neeg siv khoom tshuaj xyuas
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GL45 Ntshiab iav reagent fwj 250ml

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